An unprecedented hexagonal double perovskite organic-inorganic hybrid ferroelastic material: (piperidinium)(2)[KBiCl6]

abstract

An unprecedented A(2)M(I)M(III)X(6)-type double perovskite adopting a fully hexagonal BaNiO3-type structure, (piperidinium)(2)[KBiCl6], undergoes a 2/mF1 ferroelastic phase transition at 285 K with a spontaneous strain of 0.0615, arising from the order-disorder transition of organic cations together with the synchronous displacement of inorganic chains.

keywords

PHASE-TRANSITIONS; COMPOUND; DOMAINS

subject category

Chemistry, Multidisciplinary

authors

Meng, QR; Xu, WJ; Hu, WH; Ye, H; Chen, XX; Yuan, W; Zhang, WX; Chen, XM

our authors

Groups

acknowledgements

This work was supported by the NSFC (22071273 and 21821003) and the Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program (2017BT01C161).

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